Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > News > Cheap drinking water from the world’s oceans

June 28th, 2007

Cheap drinking water from the world’s oceans

Abstract:
Carbon nanotube-based membranes: Nanotubes, special molecules made of carbon atoms in a unique arrangement, are hollow and each is more than 50,000 times thinner than a human hair. Billions of these tubes act as the pores in the membrane. The super-smooth inside of the nanotubes allow liquids and gases to rapidly flow through, while the tiny pore size can block larger molecules. This previously unobserved phenomenon opens a vast array of possible applications. Membranes that have carbon nanotubes as pores could be used in desalination and demineralisation. Salt removal from water, commonly performed through reverse osmosis, uses less permeable membranes, requires large amounts of pressure and is quite expensive. However, these more permeable nanotube membranes could reduce the energy costs of desalination by up to 75 percent compared to conventional membranes used in reverse osmosis, researchers have said. The membranes sort molecules by size and with electrostatic forces. The carbon nanotubes used by the researchers are sheets of carbon atoms rolled so tightly that only seven water molecules can fit across their diameter.

Source:
tribuneindia.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Nanotubes/Buckyballs/Fullerenes

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

Researchers develop new way to manufacture nanofibers May 21st, 2015

Sandia researchers first to measure thermoelectric behavior by 'Tinkertoy' materials May 20th, 2015

Cotton fibres instead of carbon nanotubes May 9th, 2015

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Engineering Phase Changes in Nanoparticle Arrays: Scientists alter attractive and repulsive forces between DNA-linked particles to make dynamic, phase-shifting forms of nanomaterials May 25th, 2015

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Iranian Scientists Use Magnetic Field to Transfer Anticancer Drug to Tumor Tissue May 24th, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Water

Nanosorbent Produced in Iran to Adsorb Tiny Amounts of Aromatic Hydrocarbon from Seawater May 18th, 2015

Iran Unveils New Home-Made Medicines, Nanotechnology Products May 14th, 2015

Plugging up leaky graphene: New technique may enable faster, more durable water filters May 7th, 2015

Production of Industrial Nano-Membrane for Water, Wastewater Purification Device in Iran May 2nd, 2015

Human Interest/Art

INSIDDE: Uncovering the real history of art using a graphene scanner May 21st, 2015

Winner Announced for NNI’s First ‘EnvisioNano’ Nanotechnology Image Contest May 6th, 2015

To Conserve London's 300-Year-Old Masterpiece, Nanotech & Drones April 12th, 2015

2015 Nanonics Image Contest January 29th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project